Adjustable shuttle check



Aug. 21, 1934. v LINDSJO 1,971,226

ADJUSTABLE SHUTTLE CHECK Filed Sept. 28, 1933 W/T/VESS.

I N VE N TOR. CZ/N TON 6. (Josue/v. VEE/VEE (wax/o.

ATTORNEY.

Patented Aug. 21, 1934 UNITED STATES PATENT OFFICE ADJUSTABLE SHUTTLE CHECK ration of Maine Application September 28, 1933, Serial No. 691,371

1 Claim.

The present invention pertains to shuttle checking devices for looms, and has more particular reference to the binder and binder spring for checking the shuttle in the shuttle box.

It is common practice to mount a binder in one wall of a loom shuttle box, for movement laterally of the path of the shuttle, the binder frictionally engaging the incoming shuttle to check or retard the movement of the same. Usually, a flat spring bears against the binder to urge the same toward the shuttle, and the strength of the binder spring directly affects the efficacy of the checking action of the binder. Accordingly, it is desirable that the action of the spring on the binder be adjustable to the requirements of the particular loom operating conditions.

It is then, the object of my invention to render the binder spring of the type described adjustable and to provide a simple and convenient means for effecting such adjustment.

The preferred embodiment of my invention is shown on the accompanying drawing, of which:

Fig. 1 is a perspective of the left hand end of the lay and left hand shuttle box as seen from the rear thereof;

Fig. 2 is a longitudinal sectional view of the binder spring and binder spring adjustment; and

Fig. 3 is a detail, in perspective.

Referring to the drawing, the lay 1 carries at each end thereof a shuttle box, only the left hand box being illustrated. This shuttle box includes a floor formed on the metal lay-end 2, a front box plate 3 and a back box plate 4 suitably secured to the lay in position to receive the shuttle 5. The shuttle is picked out of the box by a picker stick 6 which bears picker 7 for engaging the tip of the shuttle. The picker stick may be checked at opposite extremes of its movement by a conventional looped check strap 8 carried by a 40 bracket 9 on the lay.

When the shuttle is returned to the shuttle box, as by being picked toward the same by picking mechanism not shown, it is frictionally engaged and retarded or checked by a binder 10 45 which, in the present construction, is pivoted at its outer end of the back box plate 4 to the lay.

The mechanism as thus far described is old and well known in the art. It may be changed or modified as desired.

The binder is spring-pressed forwardly toward the shuttle by leaf spring 12, the free end of which bears against the binder at 13. ,It is with the varying of the effective strength of the binder spring that my invention is primarily concerned.

I have provided for varying or adjusting the binder spring by providing a fulcrum member, in the form of a rib extending transversely of the spring adjacent one end thereof about which rib the spring may rock, and by providing an adjusting screw at each side of the rib for adjusting the spring and locking the same in adjusted p0 sition. In the embodiment illustrated on the drawing, the rib 14 is formed on a separate casting 15 which may be curved as at 16 to fit snugly against the outer end of the binder spring, see Fig. 3. The rib 14 is received loosely in a recess 17 in the lay, or, more properly, in a vertical flange on the metal lay-end 2. The recess 17 is in the form of a groove extending at right angles to the binder spring and serving to define the position of the latter longitudinally of the lay.

The binder spring and member 15 are apertured at 18 and 19 on each side of the rib 14. A headed adjusting screw 20 passes through the aperture 18 and a similar screw passes through the aperture 19. The screws are threaded into the metal lay-end 2. It will be apparent that the screws not only serve to fasten the binder spring in position but also may be employed to rock the binder spring about the rib 14 and thus vary the effective strength of the spring.

While the embodiment of my invention herein disclosed possesses obvious advantages and is to be preferred, changes may be made in the same, within the scope of the appended claim.

I claim:

In a shuttle checking device for looms, the combination of the lay having a shuttle box at one end thereof, a binder in said shuttle box, a binder spring operatively associated with said binder, and combined means for fixing said binder spring to the lay and adjusting the tension thereof, said means including a rib adjacent one end of said binder spring and extending transversely thereof, said rib projecting loosely into a recess formed therefor in the lay, said rib constituting a fulcrum about which said binder spring may rock, and an adjusting screw passing through the binder spring at each side of said rib and threaded into the lay for adjusting the spring about the rib and locking the spring in adjusted positon.

. v VERNER LINDSJO. 

